EP 0362969 A2 19900411 - Tachograph and vehicle speed control device.
Title (en)
Tachograph and vehicle speed control device.
Title (de)
Tachograph und Gerät zur Regelung der Fahrzeuggeschwindigkeit.
Title (fr)
Tachygraphe et appareil de contrÔle de la vitesse d'un véhicule.
Publication
Application
Priority
- EP 89202700 A 19850222
- GB 8404888 A 19840224
Abstract (en)
A tachograph comprises a casing (1,2) which houses a speed indicator (4), an odometer (6) and styli (8a,8b) for respectively recording speed and distance travelled. A stepper motor (22) drives the speed indicator (4) and speed recording stylus (8a). A stepper motor (23) drives the odometer (6) and distance recording stylus (8b). A pulse generator (25) provides an input, proportional to vehicle speed, to a microprocessor (16) which computes speed and distance on the basis of the pulse input and a correction factor (26) relating to vehicle characteristics in order to drive the stepper motors (22,23). The microprocessor (16) is also responsive to a preset maximum top speed reference (27) and a driver selected top speed reference (28) to provide an output to an actuator (30) in order to control the vehicle speed.
IPC 1-7
IPC 8 full level
B60K 31/04 (2006.01); B60K 31/18 (2006.01); G01P 1/12 (2006.01); G01P 1/14 (2006.01); G07C 5/12 (2006.01)
CPC (source: EP)
B60K 31/047 (2013.01); B60K 31/185 (2013.01); B60W 30/146 (2013.01); G01P 1/125 (2013.01); G07C 5/12 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 89202700 A 19850222